Saw-swage.



J. F. PRIBNOW.`

SAW SWAGE.

APPLlcATloN HLED JUNE 4.1914. RENEwED 0111.21. 1915.

1,176,985. Patented Mar. 28, 1916.

2 SHEETS--SHEET I.

J. F. PRBNOW.

Y sAw swAGE.

A'PPLICATION FILED JUNE 4| 1914- RENEWED OCT. 27|19|5. 1,176,985.

Patented Mar. 2851916.

2 SHEETS-SHEET 2.

l/Vl/ENTOH Application filed J'une 4, 1914, Serial No. 842,878. Renewed October lshape of the saw tooth FCE.

JOHN r. PRIBNOW, or MELLIN, wisconsin.

sAw-swAGE.

`of Wisconsin, have invented a new and useful ,Saw-Swage, of which the following is a specification. y

My invention relates to swagmg devices for swaging the points of saw teeth, and is particularly designed for use as the swaging device in the combined saw swaging, shaping, and grinding machine set forth in `my co-pending application Ser. No. 842,87 6 of even filing date herewith.

It is my object in this present invention' to provide a swagingdevice ofwhichthe anvil is tiltable in its support to" .varythe on both face and back, in which the die may bemadeuse of throughout its entire length without danger of breakage or distortion and withthe provision of clearance fromsuch parts of the saw tooth'face as have been operated on, in` which the die has two swaging surfaces of different curvature, eitheriof which` may be rendered effective, and in whichthe rise and fall of the swaging device when passing fromone tooth to the next is a minimum. In attaining this object I mount the anvil in a hole larger than the anvil itself and provide an adjusting screw ,for tilting the anvil in its hole so that its working face takes different positions, accordingpfto the shape of'tooth desired; and I also provide' a Vdie whichV is of Vuniform cross section` throughout its length and is formed of two main Vsurfaces which are such parts of cylinders being connected by smaller curved portions, and mount this die for rotation about an aXis which isnoncoincident with the axes of said cylindrical surfaces. y parts of the die on:the two sides .of the operative portion thereof in two bushings which are` spaced apart to receive the; saw between them, the die extending` across this space and being adjustablelengthwise in the bushings so that different parts of its surfaces may be brought into use as desired,

and connect both of these` bushings to an,

operating arm so thatjthey are both operated thereby, the connection between .y the bushingsv and the operating farmf being such e that the bushings may be turned togbring into play spcification" of Letters raient.

partsofcylinders of .different diameters and different aXes,'

This mounting is by placing the y Patented Mai. as, ieie.

2'?, 1915. Serial No. 58,298.

The accompanying drawings illustrate myl invention.

In these drawings, Figure 1 is an end view ofa swaging device embodying my inventi'on; Fig. 2 is` a sectional view substantially on the line 2-2 of Fig. 1; F ig. 3 is a sectional View substantially on the line 33 of Fig. 4; Fig. 4 isa side elevation; and `F ig. 5 is a'view on a somewhat larger scale showing the derivation of the die shape. y I

`The swaging devicewhich I have shown is carried by the arm 85 (which corresponds to the similarly numbered arm in my aforesaid co-pending application).` This arm terminates at its free end in a pair of arcshapedymembers 110 which have slots -111 through which bolts 112 extend for adjustably holding in place the cylindrical ends of a swage block 114, which has an enlarged middle part lying between the two arcshaped members 110 to prevent axial movement of the swage block. The vswage block 114 `is cut awayat its lower side, as is clear from Fig. 2, to provide a slot into which the sawmay project. Two clamping members 119 and 120 `project into this slot from opposite sides inV position to grasp the saw substantially `at the base of the tooth which is being swaged. 119` is pushed inward by a screw 121 to whicha clamping arm 89 is fixed, so that The clamping member y said clamping member is clamped and reis provided with an oblique bore 114 to receive a swage anvil 123, which is smaller than such bore and is adjustably `fed downward by a screw 124 which forms an abutment against which the upper end `of the` swage anvil bears. The hole for the screw 124 is sufciently large to permit the anvil to be inserted and withdrawn: therethrough. When properly adjusted, the swage anvil is clamped in adjusted"` .positionY by `a clamping screw 123', the head of `which is shown as countensunk in the lfront face, ofthe swage block 114 to either swaging surfaceof the die. allow a clearpath for an operating arm 90,

of which more will be said hereafter. In addition to the longitudinal adjustment screw 1247 there' is a single adjusting screw 124 which projects obliquely downward from the left through the swage block 114 against the upper long` face of the swage anvil 123 to tilt the latter downward or allow it to be pushed upward about its up per right hand corner, near the screw 124, at which corner the anvil bears against the inside of the bore 114. This screw 124 provides for the adjustment of the shape of the saw tooth point, and by itself completely controls the tilting of the anvil.

Mounted in the swage block 114 at right angles to the plane of the saw are two bushings 340, which project inward from the outer surfaces of the swageblock to the slot provided for the saw, being limited in their inward movement by engagement with the sides of the anvil 1237 asis clear from Fig. 2. rFliese bushings project outward beyond the swage block 114, to receive the lower ends of the bifurcated arm 90, which is connected by a linlr92 to suitable operating mechanism (described in my aforesaid copending application). Each bushing 34.0 is split at 341, and is cylindrical exteriorly 1 except for the two flattened places 342 and is provided with a nut 346 whereby .it may Y 343. either of which may coperate'with an inclined fiat surface at one side of the notch 344 in a clamping screw 345 which extends through each bifurcation of the arm 90 and be tightened to force the flat surface of the notch 344 against either of the flattened surfaces 342 or 343 to compress the bushing 340 as allowed by the split 341. The bushings 340 are properly shaped interiorly to receive the swage die 347. said die fittingl slidably within the bushings when the clamping nut 346 is loosened, and the bush-` ings at the same time being rotatable in the arm 90, and the die being clamped in the bushings and the bushings'locked in the propell position in the arm 90 when the clamping nut 346 is tightened with either of the flattened surfaces 342 or 343 in engagement with the flattened surface of the notch The die 347 is a straight bar of uniform cross section throughout. such cross section comprising a segment of a cylindrical surface 350 having a radius 351 about an axis `352 and a segment of a cylinder 353 having a radius 354 about an axis 355, the radius 354 being smaller than the radius 351. rl`he two cylinders 350 and 353 intersect. but the segments thereof forming the surfacesof the die do not extend o uite to the points of intersection but instead are connected by smaller curved surfaces 356 which are conveniently cvlindrical surfaces having much smaller radii than either of the radii 351 or 354. The inside surfaces of the bushings lof the bushings 340, such axis V358V being nearer each of said points of intersection than is the axis of the corresponding cylindrical surface.

In operation, the arm is-reciprocated so as to cause the swaging device to operate successively on different teeth of the saw, which is indicated in dotted lines in Fig. 2. As the arm 85 moves to the `left (Figs. 2 and 4) the swaging device rides upover the'back of a saw tooth and drops in front of it, the saw remaining stationary. As the arm 85 is moved to the right it moves the saw along with it and during` this movement of the swaging device and saw together the swaging takes place. First the'arm 89 is operated to force the clamping member 119 toward the clamping member 120 to grasp the hase of the saw tooth being operated` on. Then the bifurcated arm is turned to rotate thcbushings 340 ina counter-clockwise direction, (Figs. 2 and 4) vto cause one ofthe swaging surfaces.l comprising adj acent parts of the surfaces 350 and 356 or adjacent parts of the surfaces 353 and 356 (according to the position of the die), to swing lupward against the face of the saw tooth being acted on to compress the metal of such saw tooth( between such surfaces 350 and 356 (or 353 and 356) andthe working surface 360 ofthe anvil 123 to cause the saw tooth to spread as reouired. The fact that the radius of the j ci LID

cylindrical segment 350 or 353 is greater `than the distance of the axis 358 from the point at which the plane 357 intersects such surface causes the die 347 during, this operat1cn to run clear of such portion of theV saw tooth point as has been swaged, thereby facilitating the swaging operationand preventing it from decreasing as the extreme point of the saw tooth is approached. A t the end of the movement of the arm 85 to the right the clamping arm 89 is moved to release the saw from between the clamping members 119 and 120, and the arm 90 is moved to rotate the bushings 340 and the die 347 in clockwise direction, and the arm 35 starts on the next movement to the left to 4engage thenext saw tooth. As the swaging the tooth. When one part of the swaging working face of 1 ,wees-5' 1;

surface of the die'is'battered or Worn off for any reason, the clamping nuts 346 are loosened and the die is slid lengthwiseinthe bushings'340` in either direction to a fresh place on the swaging surface, whereupon the nuts 346 are re-ti-ghtened and the swaging goes on as before. length of the swaging surfaces may be used, as because of thebifurcation of the arm 90 andthe separate operation of the two bushings 340 no force is required to be trans mitted from thevbushing on one side of the saw slot to the bushing on the other side thereof, as would be required lif the arm` 90 acted on but one of such bushings. l/Vhen one swaging surface, formed by adjacent surfaces 350 and 356 or 353 and 356, is battered or worn oft' throughout its length, the die may be turned end for end in the bushings and afresh swaging surface of similar form thus presented to the work. vSo also either of the cylindrical surfaces 350 or`353 may be brought under the saw tooth, by

loosening the nuts` 346 and turning the two" bushings and die together to bring either of the flattened surfaces 342 or 343into coper-v ating relationship with the flattened sur face on the notch .344, these flattened surfaces 342 and 343 bearing the same angular relationship to the two cylindrical surfaces 356 respectively. i

I claim as my invention: i

1. A saw swaging device, comprising a swage block slotted to receive a saw, said provided with a hole for the swage anvil, said hole being in the plane ofthe saw slot and extending obliquely to swage block being the line of saw teeth,.a swage anvil mount `d in said hole and more narrow than lsaid ,hole in' the plane of the .saw slot, saidanvil having aworking face at an oblique angle toits length, means for adjusting saidanvi-l along' `said hole, a single vscrew for tilting said anvil to different angular positionsin Vsaidhole, a rotatable die extending across and coperating with the slot for the saw the working face of saidanvil, and an arm carrying said swage block and in which` said swage block is adiustably mounted.

2. A saw swaging device, comprising a swage block slotted to receive a saw, said swage block being provided with a hole for the swage anvil, said hole being in the vplane of the saw slot and extending obliquely to the line of saw teeth, a swage anvil mount` ed in said hole and more narrow than said hole in the plane of the saw slot.said anvil having a working face at an oblique angle to its length, a single screw for tiltingsaid anvil to different angular positions in said hole, a rotatable die extending across the slot for the saw andcope'rating with the said anvil, and an arm carrying said swage block and in which said swage blockis adjustably mounted.

Practically they full saw and 3. A= saw swaging device, comprising a swage blockl slotted to receive a saw, said swage block being provided with a hole for the swage anvil, said holebeingin the plane of the saw slot and extending' obliquely to the lineof saw teeth, a swage anvil mounted in said hole andmore narrow than said hole in the plane ofthe sawV ing a working face at an oblique angle to its length, means for adjusting said anvil along said hole, a single screw for tilting said anvil to said hole, and a rotatable die extending across the slot for the saw and coperating with the working face of said anvil.

4. A saw swaging device, comprising a swage block slotted to receive a saw, said swage block being provided with a hole for the swage anvil, said hole being in the plane of the saw slot and extending obliquely to the'line of saw slot, said anvil hav#` different angular positions in teeth, `a swage anvil mounted `in said hole and more narrow than said anvil to different angular positions in said hole, and a rotatable die extending across the slot for the saw and coperating with the working face of said anvil.

5; In a saw swaging device, the combinatin of a swage block slotted to receive a provided with an oblique hole in of said slot, a swage anvil in said having' a swaging surface oblique the plane hole and to its length, said anvil being more narrow than the hole in the plane of the saw slot so'that` it can be tilted to different positions therein, a screw for adjusting said swage anvil longitudinally in said hole, and a screw bearing against said swage anvil iii opposition to the action of the saw thereon for tilting.V the anvil to different angular positionsu in its hole, and a rotatable die ex tending across the slot for the saw and cooperating with the `svvaging surface of said anvil. Y e

6. In a saw svvaging device, the combina-- tion of aA swage block slotted to receive a saw and provided with an oblique hole in the plane of said slot, a* swage anvil in said hole and having a swaging surface oblique to its length, said anvil being more narrow lthan then hole in the plane of the saw slot so that it canvbe tilted 'to different positions therein",and a screw for bearing against said swage anvil in opposition tothe action of the sawv thereon for tilting the anvil to dif# positions in itshole, and a ferent angular rotatable die extending' across the slot for the saw and coperating surface of said anvil."

7. A saw swaging device, comprising a swage block slotted to receive a saw, a pair of alined bushings rotatably mounted in said swage block on opposite sides of said slot,

with the swagingi prongs of which are connected to said two bushings to operate them, and an anvil cooperating with said die.

8.y A saw swaging device, comprising a swage block slotted to receive a saw, a pair of alined bushings rotatably mounted in said swage block on opposite sides of said slot, a die mounted in said bushings and extending across said slot, a bifurcated operating arinthe two prongs of which are connected to said two bushings to operate them, and an anvil cooperating with said die.

9. A saw swaging device, comprising the combination of a swage block slotted to lreceive a saw, a pair of alined bushings rotatably mounted in said swage block on opposite sides of said slot, a die mounted in said bushings and extending across said slot, said die being adjustable lengthwise in said bushings to bring different parts of its length in said slot and having a longitudinal working surface flanked circumferentially by a portion lying within the cylinder generated by the movement of such working portion as it rotates about the axis of4 the bushings, means for rotating the two bushings together, and an anvil coperating with said die.

l0. A saw swaging device, comprising the combination of a swage block slotted to receive 'a saw, a pair of alined bushings rotatably mounted in said swage block on Aopposite sides of said slot, a die mounted in said bushings and extending across said slot, said die having a longitudinal working surface flanked circumferentially by a pory tion lying within the cylinder generated by the movement of such working portion as it rotates about the axis of the bushings, means for rotating the two bushings together, and` an anvil coperating with said die.

l1. A saw swaging device, comprising the combination of a swage block slotted to receive a saw, a pair of alined bushings rotatably mounted in said swage 'block on opposite sides of said slot, a die mounted in said bushings and extending across said slot, said die being adjustable lengthwise in said bushings to bring different parts of its length in said slot and having a longitudinal working surface fianked circun'iferentially by portions which on the two sides of such working surface lie with and depart with different degrees of abruptness from the cylinder generated by the movement of such working portion as it rotates about the axis of the bushings, means for rotating the two bushings'together, and an anvil coperating with said die. Y

12. A saw swagin'g device, comprising the" combination of a swage block slotted to receive a saw, a pair of alined bushings ro-A tatably mounted in said swage block on opposite sides of said slot, a `die mounted in said bushings and extending across said slot, said die having a longitudinal working surface flanked circumferentially by portions which on the two sides of such working surface lie with and depart with different degrees of abruptness from the cylinder generated by the movement of such working portion as it rotates about the axis of the bushings, means for rotating the two bushings together, and an anvil coperating with 8o said die. 13. In a saw swaging device, the combination of a swage block slotted to receive a saw, two alined bushings rotatably mounted in said swage block on opposite sides of said slot, said bushings being split, a die mounted in said bushings and extending across said l slot and composed of two main cylindrical segments having different radii, a bifurcated operating arm the two prongs of which are 9U 'y connected to the two bushings respectively, and means for clamping said bushings in different positions in the arms and for tightening the bushings on the'die.

14. In a saw swaging device, the combination of a swage block slotted to receive a saw, two alined bushings rotatably mounted in said swage block on opposite sides of said slot, said bushings being split, a die mounted in said bushings and extending 10U across said slot and composed of two main cylindrical segments having diderent radii hotly,l greater than their minimum distances froni the Vaxis of rotation of the bushings, al

bifurcated operating arm the two prongs of 10"" which are connected to the two bushings respectively, and means forv clamping said l bushings in different positions in the arms' and for tightening the bushings on the die.

l5.V In a saw swaging device, the combinai tion of a swage block slotted to receive a saw, two alined bushings rotatably mounted in said swage block on opposite sides of said slot, said bushings being split, a die mounted in 'said bushings and extending across said 115 slot and composed of two main cylindrical segments having different radii, said main surfaces being connected by smaller curved surfaces at Ythe places where the two cylinders would intersect, a bifureated operating arm the-two prongs of which are connected to the two bushings respectively, and means for clamping said bushings in. different positions in uthe arms and for `tightening the bushings on the die. 1.25 i

16. In a saw swaging device, a die which, is of uniform cross section throughout its length and is composed of two main cylindrical segments of different curvatures, and with different axes, said two segments being -being less than the connected by two smaller curved surfaces, and a rotatable mounting for said die for causing it to rotate about an axis non-coincident with the axis of either of said segments, the minimum distance of said axis of rotation from each segment being less than the radius of said segment.

17. In a saw swaging device, a die which is of uniform cross section throughout its length and is composed of two main cylindrical segments with different axes, said two segments being connected by two smaller curved surfaces, and a rotatable mounting for said die for causing it to rotate about an axis non-coincident with the axis of either of said segments, the minimumdistance of said axis of rotation from each segment radius of said segment.

In a saw swaging device, a die which is of uniform cross section throughout its length and is composed of two main cylindrical segments of different curvatures, and with different axes, and a rotatable mounting for said die for causing it to rotate about an axis noncoincident with the axis of either of said segments, the minimum distance of said axis of rotation from each segment being less than the radius of said segment. l

19. In a saw swaging device, a die which is of uniform cross section throughout its length and is composed of two main cylindrical segments with different axes, and a rotatable mounting for said die for causing it to rotate about an axis non-coincident with the axis of either of said segments, the minimum distance of said axis of rotation from each segment being less than the radius of said segment.

20. A. saw swaging device, comprising a swage block slotted to receive a saw, said swage block being provided with a hole for the swage anvil, said hole being in the plane of the saw slot and extending obliquely to the line of the saw teeth to the outer surfaceV of the swage block, a swage anvil mounted in said hole and more narrow than the hole in the plane of the saw slot so that it can be tilted therein in the plane of the saw and as small as the hole in any direction so that it can be removed from the outer end thereof, said anvil having a working face at an oblique angle to its length, a screw in the outer end of said hole for adjusting the anvil along said hole, means for tilting said anvil to different angular positions in said hole, and a rotatable die extending across the slot for the saw and cooperating with the working face of said anvil.

saw swaging device, comprising a swage block slotted to receive a saw, said swage block being provided with a hole for the swage anvil, said hole being in the plane of the saw slot and extending obliquely to the line of the saw teeth to the outer surface of the swage block, a swage anvil mounted in said hole and more narrow than the hole in the plane of the saw slot so that it can be tilted therein in the plane of the saw and as small as the hole in any direction so that it can be removed from the outer end thereof, said anvil having a working face at an oblique angle to its length, a screw in the outer end of said hole for adjusting the anvil along said hole, a rotatable die extending across the slot for the saw and coperating with the working face of said anvil, said die tending to tilt said anvil lateralljT in its hole, and a single screw projecting laterally into said hole and bearing against saidv anvil to oppose such tilting and to adjust the tilting of the anvil in the other direction.

In witness whereof, I have hereunto set my hand at Indianapolis, Indiana, this twenty-ninth day of May, A. D. one thousand nine hundred and fourteen.

JOHN F. PRIBN OW. Witnesses:

JosEPHINn GAsrER, G. B. SCHLEY.

Copies of this patent may be obtained for ve cents each, by addressing' the"Commiss1oner of Patents, Washington, D. C. 

